过去,我市没有专用于鲜食的玉米品种,农民一般用生长期短的普通玉米,进行早播,以争取农时,提早上市。天津市农作物研究所,于1984年用东二选作母本,北承选作父本,组配成玉米单杂交种。经济效益1986～1988 3年品比试验,一平均比对照京早8号上市早14天,亩产鲜穗分别为1175公斤,1175公斤和1170公斤,亩产值分别为1250元、1250元和1260元,分别比京早8号增值100%、100%和 In the past, there was no maize variety dedicated to fresh food in our city. Farmers generally use ordinary maize with short growing period for early sowing, so as to gain farm time and get listed earlier. Tianjin Crop Research Institute, in 1984 with the East Second as the mother, North Chengxuan as a patriarchal, grouping into a single hybrid corn. Economic efficiency 1986 ~ 1988 3 years of comparative tests, an average of more than the control early morning listing on the 8th, earns per mu were 1175 kg, 1175 kg and 1170 kg, respectively, the mu output value of 1250 yuan, 1250 yuan and 1260 Yuan, respectively, than the early morning Beijing 8 100% increase, 100% and